Errata

page 1013: 'abolutely'->'absolutely'

page 1018: 'distnace'->'distance'

page 1023: 'preceptible'->'perceptible'

page 1033: 'tow'->'two'

page 1035: 'be-between'->'between'

page 1044: 'An'->'And'

page 1048: 'caluse'->'clause'

page 1050: 'beuilt'->'built'

page 1051: 'dodechahedron'->'dodecahedron'

page 1056: 'ocatve'->'octave'

page 1059: 'privte'->'private'

page 1063: 'ony'->'only'

page 1063: 'indentisonant'->'identisonant'

page 1077: 'icosadron'->'icosahedron'

page 1081: 'perferred'->'preferred'

page 1082: 'fomes'->'forms'